Pump



G. B. TREW.

PUMP.

APPLICATION FILED maza, Iszo.

mma May 9,1922;

.GEORGE BAimEiTE `prima@ or sHnEvEroRi.. :Lou-islaivaf ruiur. ,1.

To all 107mm t may concern:

Be it known that I.rv GEORGE B.

Shreveport, in the county of Caddo andfState of Louisiana, have invented `a new kand useful Pumpfof which the following is a specification.

It isthe objectof thepresent vinvention to. provide a simple but efficient 'means whereby mud; silt and the' like "may be pumped out of the bottoni of a well, it. being possible yto accumulate a. considerableamou'nt of material before the material is raised out of the well. The invention aims to provide a device of the kind mentioned in which the material may be collected by a'seriesof short strokes, it being unnecessary to lift a long column.

of mud.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains. f

In the accompanying drawings Figure 1 shows in longitudinal section, the# lower portion of a device constructed in accordance with the invention; Figure 2v shows in longitudinal section, the upper portion of a device constructed in accordance with the invention; Figure 3 is a cross section on the line 3-3 of Figure In carrying out the invention there is provided an outer tubular casing 1. A foot 2 is secured at 3 to the casing 1, the top 4 of the foot 2 forming the bottom of the casing` 1, although the bottom of the casing may be fashioned in any desired way. The foot 2 is provided with inwardly extended spurs 5, which serve, at once, to vanchor the casing 1 in the mud or silt at Athe bottom of a well, and serves, also, to break up and ,dis-

tribute the mud or silt when vthe same is sucked upwardly by the action of the pumping device hereinafter described. v.

A head 6 is secured at 7 on the upper end of the casing 1. The numeral 8 denotes a cylinder located within the casing 1. -The cylinder 8 opens at its lower end through the bottom l of the casing 1 and is'connected to the bottom. The upper end of the cylinder 8 terminates as shown at 9, at a considerable distance below the upper end of the outercasing 1, the space defined by the casmg 1, the cylinder 8 and the bottom at constituting a receptacle 10 wherein the mud or silt is received, under conditions to be pointed out hereinafter. The numeral 11 y. -marls'aplungery TREW, a citizen of the United; States, residing.,Tv at an abutment y15 whichI engages v'the 'of' the spring on Ytheup'strokev.

A departing from'. the

p mounted toreciprocate in the head 6the wardlyf'the casing 1, into thewcylinder 8;

VA'spring-112 is 'held inthe upper'end ofthe 12 Von 'rtlie down stroke,

The plunger 11i 4nia the plunger. On the ybe operated by any suitable means, such as a cable 16, connected 'to the Iupper end of plunger extending downl which` engagesthe upper end of the spring" the plunger having lower end lower end of the plungerllthere is a piston 17 which may be made in many ways without spiritv of the invention. Preferably,

andpivoted to the lower end of t e plunger 11 as shown at 19, so that the leaves 18 'may swing however, the piston 17 consists vof a .pairofleaves 18, pivoted to each other,v

upwardly and downwardly. Each leaf is provided with an extension 20, prolonged beneathvthe otherleaf, so that the leaves cannot fold downwardly beyond the l approximately horizontal Figure 1 of the drawings.

In practical operation, vtheentire device is Vlo-wered into a well, 16. Whilst the device position shown in is being lowered, the

abutment 15 is in engagement with the lower end of the spring 12,

the piston 17 being disposed in the Icylinder 8, relatively near to the upper' end of the cylinder. Ultimately, the. foot 2 encounters the mud or silt in the bottomof thel well. Then, the casing 1 is held in the bottom of the well, by the weight of the casing,

By means of the cable .16', movement may be imparted to theplunger 11 and tothe piston 17. On the downstroke, the leaves 18 foldupwardly, the piston 17 being thrust downwardly into the column of mud in the'cylinder 8. On the upstroke, the piston 17 raises so much of the mud as vmay be in the cylinder 8 above the piston, `more mud being sucked into the lower end of the cylinder, below the piston, the spurs 5 serving to break up and separate the mud as the mud moves upwardly. mud isdelivered over the upper. end 9 of the cylinder 8 and'moves downwardly into the receptacle 10.v When a sufficient quantity .of mud has accumulated in the receptacle 10, the entire device may n vwell by means of the cable 16. One ofthe many advantages of the device is that it is a reciprocating by means of the cable On the upstroke, the

be hoisted out of the l orI vby the hold which` the spurs 5 may secure in the mud.

los

unnecessary to lift, at each stroke, a long column of mud equal in height to the distance from the bottom of the well to the top thereof. Any suitable means may be provided for letting the mud out of the receptacle 10. If desired, a hole 25 may be formed in the casing l close to the bottom l of the casing, the hole being closed by a trap door 26, slidable in guides 27 on the casing.

Having thus described vthe invention, is claimed is In a device of the class described, an outer casing having a bottom; a cylinder carried by the bottom and opening through the bottom; a plunger mounted to reciprocate in the cylinder; a piston carried by the plunger and embodying pivotally mounted upwardly-oldable leaves provided with cooperating means for limiting the downward what folding movement of the leaves, the piston and the plunger constituting means for deliveringmaterial from within the cylinder into the space between the cylinder and the casing; and interengaging elements on the `plunger and on the casing, cooperating to GEORGE BARNETTE Tunw,v

Witnesses z B. B. CURTIS, 'FRANK J; LoUNEY. 

